VanderWeide Andrew, Prokopchuk Demyan E
Department of Chemistry, Rutgers University - Newark, Newark, NJ, USA.
Nat Rev Chem. 2023 Aug;7(8):561-572. doi: 10.1038/s41570-023-00501-1. Epub 2023 May 31.
The cyclopentadienyl (Cp) ligand is a cornerstone of modern organometallic chemistry. Since the discovery of ferrocene, the Cp ligand and its various derivatives have become foundational motifs in catalysis, medicine and materials science. Although largely considered an ancillary ligand for altering the stereoelectronic properties of transition metal centres, there is mounting evidence that the core Cp ring structure also serves as a reservoir for reactive protons (H), hydrides (H) or radical hydrogen (H) atoms. This Review chronicles the field of Cp ring activation, highlighting the pivotal role that Cp ligands can have in electrocatalytic H production, N reduction, hydride transfer reactions and proton-coupled electron transfer.
环戊二烯基（Cp）配体是现代有机金属化学的基石。自二茂铁被发现以来，Cp配体及其各种衍生物已成为催化、医学和材料科学的基础结构单元。尽管Cp配体在很大程度上被视为用于改变过渡金属中心立体电子性质的辅助配体，但越来越多的证据表明，核心Cp环结构还可作为活性质子（H）、氢负离子（H）或自由基氢（H）原子的储存库。本综述记述了Cp环活化领域，强调了Cp配体在电催化产氢、氮还原、氢负离子转移反应以及质子耦合电子转移中可能发挥的关键作用。
